CN219163666U - Quantitative liquid injection device for lithium battery - Google Patents
Quantitative liquid injection device for lithium battery Download PDFInfo
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- CN219163666U CN219163666U CN202320201377.8U CN202320201377U CN219163666U CN 219163666 U CN219163666 U CN 219163666U CN 202320201377 U CN202320201377 U CN 202320201377U CN 219163666 U CN219163666 U CN 219163666U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a quantitative liquid injection device of a lithium battery, which comprises: the device comprises a shell, a liquid injection mechanism arranged on the shell and a driving mechanism for driving the liquid injection mechanism to linearly move; the liquid injection mechanism comprises a liquid injection shell and a liquid injection needle assembly; the electrolyte replenishing port and the electrolyte outlet are arranged on the electrolyte injecting shell; the liquid injection needle assembly comprises a liquid injection needle cavity arranged at the liquid outlet, a fixed plate arranged in the liquid injection needle cavity, a first sealing block, a second sealing block and a jacking column; and one end of the first sealing block is connected with the fixed plate through a first spring, and the other end of the first sealing block is connected with the jacking column. The device can solve the defects in the prior art, realizes accurate quantitative liquid injection of the lithium battery, and has the characteristics of simple structure, low cost and the like.
Description
Technical Field
The utility model relates to the technical field of lithium battery production and manufacturing, in particular to a quantitative liquid injection device for a lithium battery.
Background
A lithium ion battery is a secondary battery (rechargeable battery) that operates mainly by means of lithium ions moving between a positive electrode and a negative electrode. In the process of processing and producing the lithium ion battery, electrolyte is needed, the electrolyte requirements of lithium batteries with different capacities are different, and constant liquid injection amount cannot be ensured. The existing partial liquid injection process generally adopts vacuum liquid injection, but the liquid injection mode can not ensure quantitative liquid injection, and the equipment has complex structure and high price.
Therefore, it is desirable to provide a lithium battery quantitative liquid injection device that can achieve quantitative liquid injection, and that has a simple structure and low cost.
Disclosure of Invention
The utility model aims to provide a quantitative liquid injection device for a lithium battery, which can solve the defects in the prior art, realize accurate quantitative liquid injection of the lithium battery and has the characteristics of simple structure, low cost and the like.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a lithium battery dosing device, the device comprising: the device comprises a shell, a liquid injection mechanism arranged on the shell and a driving mechanism for driving the liquid injection mechanism to linearly move;
the liquid injection mechanism comprises a liquid injection shell and a liquid injection needle assembly; the electrolyte replenishing port and the electrolyte outlet are arranged on the electrolyte injecting shell;
the liquid injection needle assembly comprises a liquid injection needle cavity arranged at the liquid outlet, a fixed plate, a first sealing block, a second sealing block and a jacking column which are arranged in the liquid injection needle cavity;
and one end of the first sealing block is connected with the fixed plate through a first spring, and the other end of the first sealing block is connected with the jacking column.
Further, a first limiting mechanism and a second limiting mechanism are respectively arranged on two sides of the liquid injection mechanism;
the first limiting mechanism comprises a first limiting rod and a first limiting block, the first limiting rod is arranged between two opposite surfaces of the shell, and the first limiting block is sleeved on the first limiting rod;
the second limiting mechanism comprises a second limiting rod which is arranged in parallel with the first limiting rod and a second limiting block which is sleeved on the second limiting rod;
a second spring is arranged between the first limiting block and the shell and between the second limiting block and the shell respectively;
the first limiting block and the second limiting block are connected with the liquid injection shell.
Further, the driving mechanism is a servo electric cylinder.
Further, an inclined surface is arranged at one end, close to the liquid outlet, of the liquid injection shell; the inclination angle of the inclined surface is 30-80 degrees.
Further, a chute is formed in the inner wall of the liquid injection needle cavity;
a sliding block is arranged on the first sealing block;
the first sealing block is in sliding fit with the sliding groove through the sliding block.
Further, the shape of the first sealing block is arranged corresponding to the shape of the second sealing block.
Further, a through hole is formed in the second sealing block, and the top column penetrates through the through hole.
Further, the first sealing block and the second sealing block are sequentially arranged;
the second sealing block is arranged on the liquid injection needle cavity close to the outlet of the liquid injection needle cavity.
Further, a mounting plate is arranged on the shell.
Further, a first cambered surface is arranged at one end, close to the second sealing block, of the first sealing block; a second cambered surface is arranged at one end, close to the first sealing block, of the second sealing block; the first cambered surface and the second cambered surface are correspondingly arranged, and when the first sealing block and the second sealing block are in contact, the first cambered surface is in close contact with the second cambered surface.
Compared with the prior art, the utility model has the advantages that:
according to the quantitative liquid injection device for the lithium battery, the ejector column is connected with the liquid injection port of the battery, when the driving mechanism drives the liquid injection shell to move, the acting force of the battery on the ejector column can enable the first sealing block to move upwards, a gap is formed between the first sealing block and the second sealing block, electrolyte in the liquid injection shell enters the battery through the gap between the first sealing block and the second sealing block, and liquid injection is carried out on the battery. When the electrolyte injection work is carried out, the electrolyte injection time can be set, so that the electrolyte is injected at fixed time and fixed quantity. The first sealing block is in sliding fit with the sliding grooves arranged on the inner wall of the cavity of the liquid injection needle through the sliding blocks arranged on the two sides of the first sealing block, so that the stability of the first sealing block during operation can be ensured through the design. The liquid injection mechanism is connected with the first limiting mechanism and the second limiting mechanism through two connecting pieces arranged on the outer wall of the liquid injection shell, the first limiting mechanism and the second limiting mechanism are respectively connected, the liquid injection mechanism moving vertically can be protected under the action of limiting and guiding, and the liquid injection shell is tightly contacted with the surface of the battery when the liquid injection device performs liquid injection operation on the battery, so that the tightness is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view in section A-A of FIG. 1;
fig. 3 is a schematic view of the structure of the injection needle assembly.
Wherein:
1. the electrolyte injection device comprises a mounting plate, a 2, a shell, a 3, a liquid injection shell, a 4, a servo electric cylinder, a 5, an electrolyte supplementing port, a 6, a first limiting rod, a 7, a first limiting block, a 8, a second spring, a 9, an inclined plane, a 10, a liquid outlet, a 11, a liquid injection needle cavity, a 12, a first sealing block, a 13, a top column, a 14, a second limiting block, a 15, a fixing plate, a 16, a first spring, a 17, a chute, a 18, a sliding block, a 19, a second sealing block, a 20 and a second cambered surface.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
a lithium battery quantitative liquid injection device as shown in fig. 1 to 3, comprising: the device comprises a shell 2, a liquid injection mechanism arranged on the shell 2 and a driving mechanism for driving the liquid injection mechanism to linearly move. The driving mechanism is a servo electric cylinder 4.
The liquid injection mechanism comprises a liquid injection shell 3 and a liquid injection needle assembly; the electrolyte replenishing port 5 and the liquid outlet 10 are arranged on the electrolyte injecting shell 3;
the liquid injection needle assembly comprises a liquid injection needle cavity arranged at the liquid outlet 10, and a fixing plate 15, a first sealing block 12, a second sealing block 19 and a jacking column 13 which are arranged in the liquid injection needle cavity. The first sealing block 12 is made of stainless steel.
The first sealing block 12 has one end connected to the fixing plate 15 via a first spring 16 and the other end connected to the top post 13. The second sealing block 12 is provided with a through hole, and the top column 13 passes through the through hole. And a top column 13 for connecting the liquid injection device and the lithium battery.
Further, a first limiting mechanism and a second limiting mechanism are respectively arranged on two sides of the liquid injection mechanism; the first limiting mechanism comprises a first limiting rod 6 arranged between two opposite surfaces of the shell 2 and a first limiting block 7 sleeved on the first limiting rod 6. A first through hole is formed in the first limiting block, and the first limiting rod penetrates through the first through hole. The second limiting block is provided with a second through hole, and the second limiting rod penetrates through the second through hole.
The second limiting mechanism comprises a second limiting rod which is arranged in parallel with the first limiting rod 6 and a second limiting block 14 which is sleeved on the second limiting rod.
A second spring 8 is respectively arranged between the first limiting block 7 and the shell 2 and between the second limiting block 14 and the shell 2.
The first limiting block 7 and the second limiting block 14 are respectively connected with the liquid injection shell through a connecting piece.
When the servo electric cylinder drives the liquid injection mechanism to move downwards, the first limiting block and the second limiting block connected with the liquid injection shell move downwards together, and the second spring is compressed. Under the elastic force of the second spring, the shell 2 can be tightly contacted with the surface of the battery, so that the tightness during liquid injection is ensured. The two limiting mechanisms play a role in limiting and guiding the vertically moving liquid injection mechanism, can play a role in protecting the liquid injection mechanism,
further, an inclined surface 9 is arranged at one end of the liquid injection shell 3 close to the liquid outlet 10, and the inclined surface is convenient for the electrolyte to flow in the cavity; the 9-degree inclination of the inclined surface is 30-80 degrees, preferably 60 degrees.
Further, a chute 17 is formed on the inner wall of the liquid injection needle cavity 11; a sliding block 18 is arranged on the first sealing block 12; the first sealing block 12 is in sliding fit with the sliding groove 17 through the sliding block 18. The first sealing block is in sliding fit with the sliding grooves arranged on the inner wall of the cavity of the liquid injection needle through the sliding blocks arranged on the two sides of the first sealing block, so that the stability of the first sealing block during operation can be ensured through the design.
Further, the first sealing block 12 and the second sealing block 19 are sequentially arranged; the second sealing block 19 is arranged on the injection needle cavity 11 near the outlet of the injection needle cavity 11. The shape of the first sealing block 12 corresponds to the shape of the second sealing block 19. A first cambered surface is arranged at one end of the first sealing block 12, which is close to the second sealing block 19; a second cambered surface 20 is arranged at one end, close to the first sealing block 12, of the second sealing block 19; the first cambered surface is correspondingly arranged with the second cambered surface 20, and when the first sealing block 12 is contacted with the second sealing block 20, the first cambered surface is tightly contacted with the second cambered surface 20. By the design, when the first sealing block is in contact with the second sealing block, the first sealing block is in close contact with the second sealing block, a gap between the first sealing block and the second sealing block is 0, and electrolyte leakage in the liquid injection shell and the battery is avoided. After the first sealing block and the second sealing block are separated from each other by a certain distance, a certain gap is formed between the first sealing block and the second sealing block, so that the electrolyte in the electrolyte injection shell can flow into the battery along the gap.
Further, the housing 2 is provided with a mounting plate 1. The mounting plate is used for connecting an actuating mechanism of the liquid injection machine and can be arranged on the cylinder and the servo motor.
Further, the liquid injection shell 2 is internally provided with a PLC controller, and the PLC controller is electrically connected with the servo electric cylinder 4. The PLC controller adopts the prior art to set electrolyte injection time, and adopts the prior art to control the servo electric cylinder 4 to push the electrolyte injection shell 3 to perform lifting operation, so that electrolyte timing and quantitative injection work is realized. The servo electric cylinder 4, the PLC controller, and the PLC controller used in this embodiment are all common knowledge in the art.
The working principle of the utility model is as follows:
as shown in fig. 1 to 3, the telescopic rod of the servo electric cylinder 4 is connected to the top of the liquid injection housing 3, and the liquid injection housing 3 moves linearly with the servo electric cylinder 4 under the drive of the servo electric cylinder 4. When the injection housing 3 moves, the injection needle cavity 11 is driven to move together. When the liquid injection operation is not performed, the first sealing block 12 and the second sealing block 19 are in close contact with each other, and no gap exists between the two. When the quantitative liquid injection device is used, the telescopic rod of the servo electric cylinder 4 drives the liquid injection shell 3 to move downwards, and when the stepped structure at the bottom of the liquid injection needle cavity is tightly matched with the liquid injection hole on the battery, the servo electric cylinder 4 stops working. At this time, the top column 13 at the bottom of the liquid injection shell 3 is propped against the fixed block inside the battery, and under the action of the valve inside the battery, the top column 13 is forced to move upwards, so as to drive the first sealing block 12 to move upwards, so that a gap is generated between the first sealing block 12 and the second sealing block 19, and electrolyte inside the liquid injection shell 3 enters the inside of the battery through the gap. After the electrolyte is dripped, the telescopic rod of the servo electric cylinder 4 is contracted, the first sealing block 12 is propped against the second sealing block 19 under the reset action of the first spring 16, the gap between the first sealing block and the second sealing block is 0, and the liquid injection operation is stopped.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (10)
1. A lithium battery quantitative liquid injection device, characterized in that the device comprises: the device comprises a shell, a liquid injection mechanism arranged on the shell and a driving mechanism for driving the liquid injection mechanism to linearly move;
the liquid injection mechanism comprises a liquid injection shell and a liquid injection needle assembly; the electrolyte replenishing port and the electrolyte outlet are arranged on the electrolyte injecting shell;
the liquid injection needle assembly comprises a liquid injection needle cavity arranged at the liquid outlet, a fixed plate, a first sealing block, a second sealing block and a jacking column which are arranged in the liquid injection needle cavity;
and one end of the first sealing block is connected with the fixed plate through a first spring, and the other end of the first sealing block is connected with the jacking column.
2. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
a first limiting mechanism and a second limiting mechanism are respectively arranged on two sides of the liquid injection mechanism;
the first limiting mechanism comprises a first limiting rod and a first limiting block, the first limiting rod is arranged between two opposite surfaces of the shell, and the first limiting block is sleeved on the first limiting rod;
the second limiting mechanism comprises a second limiting rod which is arranged in parallel with the first limiting rod and a second limiting block which is sleeved on the second limiting rod;
second springs are respectively arranged between the first limiting block and the shell and between the second limiting block and the shell;
the first limiting block and the second limiting block are connected with the liquid injection shell.
3. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the driving mechanism is a servo electric cylinder.
4. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
an inclined surface is arranged at one end of the liquid injection shell, which is close to the liquid outlet;
the inclination angle of the inclined surface is 30-80 degrees.
5. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
a chute is formed in the inner wall of the liquid injection needle cavity;
a sliding block is arranged on the first sealing block;
the first sealing block is in sliding fit with the sliding groove through the sliding block.
6. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the shape of the first sealing block is arranged corresponding to the shape of the second sealing block.
7. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
and the second sealing block is provided with a through hole, and the jacking column penetrates through the through hole.
8. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the first sealing block and the second sealing block are sequentially arranged;
the second sealing block is arranged on the liquid injection needle cavity close to the outlet of the liquid injection needle cavity.
9. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the shell is provided with a mounting plate.
10. The apparatus of claim 6, wherein the device comprises a plurality of sensors,
a first cambered surface is arranged at one end, close to the second sealing block, of the first sealing block;
a second cambered surface is arranged at one end, close to the first sealing block, of the second sealing block;
the first cambered surface and the second cambered surface are correspondingly arranged, and when the first sealing block and the second sealing block are in contact, the first cambered surface is in close contact with the second cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320201377.8U CN219163666U (en) | 2023-01-30 | 2023-01-30 | Quantitative liquid injection device for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320201377.8U CN219163666U (en) | 2023-01-30 | 2023-01-30 | Quantitative liquid injection device for lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN219163666U true CN219163666U (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320201377.8U Active CN219163666U (en) | 2023-01-30 | 2023-01-30 | Quantitative liquid injection device for lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117293497A (en) * | 2023-11-24 | 2023-12-26 | 深圳市恒永达科技股份有限公司 | Battery liquid injection crystallization-preventing maintenance method and battery liquid injection system |
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2023
- 2023-01-30 CN CN202320201377.8U patent/CN219163666U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117293497A (en) * | 2023-11-24 | 2023-12-26 | 深圳市恒永达科技股份有限公司 | Battery liquid injection crystallization-preventing maintenance method and battery liquid injection system |
| CN117293497B (en) * | 2023-11-24 | 2024-03-08 | 深圳市恒永达科技股份有限公司 | Battery liquid injection crystallization-preventing maintenance method and battery liquid injection system |
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